I have a List<List<Double>>. I want to filter rows on the basis of an index i.e. if value of an element at index 4 is less than 0.2 then, skip that row? The resultant List<List<Double>> should be smaller or same as the input one.
You can use Stream.filter. Note you have to select the rows which you want to take, not the rows which you want to skip:
List<List<Double>> input = ...;
List<List<Double>> result = input.stream()
.filter(row -> row.get(4) >= 0.2)
.collect(Collectors.toList());
An alternative to the Stream API would be in-place modification using Collection.removeIf:
List<List<Double>> input = ...;
input.removeIf(row -> row.get(4) < 0.2);
Collected from the Internet
Please contact [email protected] to delete if infringement.
Comments